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A new type of 4.5 inch gun with a longer 55-calibre barrel, it was designed in the 1960s for the Royal Navy's new classes of frigates and destroyers.The weapon, built by Vickers Ltd Armament Division, was developed by the Royal Armament Research and Development Establishment using the Ordnance, QF 105 mm L13 of the Abbot self-propelled gun as a starting point (it used electrical primers).
The QF 4-inch gun Mk IV [note 1] was the main gun on most Royal Navy and British Empire destroyers in World War I. It was introduced in 1911 as a faster-loading light gun successor to the BL 4 inch Mk VIII gun. Of the 1,141 produced, 939 were still available in 1939. [1] Mk XII and Mk XXII variants armed many British interwar and World War II ...
4.7-inch QF Gun, No. 563, Mark IV, manufactured in 1894 by Royal Gun Factory,on Percy Scott carriage,preserved in the courtyard of Indian Museum at Kolkata (Calcutta) 2 QF 4.7-inch B Mk IV* guns on central pivot mounts, Fort Amherst, St. John's, Newfoundland; 2 QF 4.7-inch B Mk IV* guns on central pivot mounts, Bell Island, Newfoundland
The standard designation for a UTS thread is a number indicating the nominal (major) diameter of the thread, followed by the pitch measured in threads per inch.For diameters smaller than 1 / 4 inch, the diameter is indicated by an integer number defined in the standard; for all other diameters, the inch figure is given.
Task Force 38 was composed of four task groups: Task Group 38.1 was commanded by Admiral McCain, with its previous commander, Admiral Joseph "Jocko" Clark, remaining on as advisor, Task Group 38.2 was under the command of Admiral Gerald Bogan, Task Group 38.3 was led by Admiral Frederick Sherman, and Task Group 38.4 was under the command of ...
Speed requirements varied from 35 to 38 knots (65 to 70 km/h; 40 to 44 mph), and shortcomings in the earlier Sims class, which were top-heavy and needed lead ballast to correct this fault, caused the Fletcher design to be widened by 18 in (46 cm) of beam. [8] As with other previous U.S. flush deck destroyer designs, seagoing performance suffered.
The 5-inch (127 mm)/54-caliber (Mk 45) lightweight gun is a U.S. naval artillery gun mount consisting of a 5 in (127 mm) L54 Mark 19 gun on the Mark 45 mount. [1] It was designed and built by United Defense , a company later acquired by BAE Systems Land & Armaments , which continued manufacture.
ANSP 1: Air navigation service provider: ANSP 2: Authorization of Aircraft Network Security Program ANT Antenna (radio) ANSOG Airport Network Security Operator Guidance A/O Air oil In turbine engines AOA Angle of attack: AOC 1: Air operator's certificate: AOC 2: Aeronautical operational control: AOG Aircraft on ground: AOM 1: Aircraft ...
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